Multiple fastening device



Feb. 5, 1929.

W. L. PIPES MULTIPLE FASTENI NG DEVICE Filed July 24, 1926 lll ATTORNEY.

Patented Feb. 5,rl929.

UNITED STATES i 1,701,083 PATENT oFFlcE.

WALTER L. PIPES, 0F ELIZABETH, NEW JERSEY', ASSIGNOB TO THE SHOE HAIRJNAREy COMPANY, 0F WATEBBURY, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

MLTIPLE FASTENING DEVICE.

Application led July 24,- 1926. Serial No.. 124,759.

This invention rela-tes to separable fasteners and particularly to that type of fastener for overshoes, garments, automobile curtains, and other purposeswhere two stringere are locked and unlocked by a sliding cam device, the locking being effected by-travel in one direc tion and unlocking by an opposite movement.

The object of the invention is to provide a simple locking device, which may be small and which will be light in weight, easy to manufacture, and which is adapted to give a particularly strong, flexible union.

A feature of the invention is the warped shape of the engageable members which causes them to be particularly well adapted to resist lateral displacement, at the same time allowing the completed fastener to be more readily flexed longitudinally.

According to the present invention, the

locking members areall alike and are there-- fore interchangeable. The stringers lnay be of any suitable type but preferably consist of a fabric tape having a beaded or corded edge upon which the locking members are clamped. The lockingv members consist of-contractible Vjaw portions adapted vto be clamped upon the tape and engageable portions which are arched longitudinally and warped transversely. The members secured to one Stringer alternate with those on the other Stringer so that when the sliding device is moved back and forth the locking members will be engaged and disengaged according to the direction of movement.

The invention resides particularly in the form of the engageable portions of the lockingmembers, the doubly curved surface of which is novel and especially well adapted for the many uses when an unusual degree of strength is required of the fastener. Longitudinal curving or arching of the members enables them to engage easily and prevents their longitudinal disengagement when so interlocked. The transverse warping of the surfaces of each member causes them to be doubly bound together, preventing their lateral disengagement.` Because of their curved surfaces, the members are adapted to slip over one anothervto afslight degree without risk y of disengaging, thus increasing the exibilit-y of the fastener.

Referring now to the drawings:

Fig. 1 is a perspective view on an enlarved scale of a fastener embodying this invention.

'to enga-ge the locking Fig. 2 is a cross-section on the line a'-a of Fig. 1. Fig. 3 is a. transverse section of theelocklng members.

Fig. 4 is a longitudinal section of the locking members showing their staggered arrangement; and

Fig. 5 is a detailed view of one" of the locking members.

Referring to Fig.- 1, it will be seen that the stringere l-l have at their abutting edges beads 2 upon which the interlocking mem# bers are securely fastened. While the locking members may of course be secured to the fabric in .other ways, this has been found to be the preferred method." The stringers may be secured together at one end by a fastening link such as 3 and will have suitable stopping members ,such as4 at the-o posite end to limit the movement' of the sli er. A sliding cam operating device 5, many varieties of which are well known, is mounted on both stringers. Preferably it will be Y-shaped, branches 6 being each separatell mounted on a Stringer, thus forming a gulde or tongue which upon movement in one direction serves members, but upon movement in the other direction to disengage them. The slider ma be operatedvby means of a ring 7 secured to t 1e slider by rivet 8.

Fig. 5 represents one of the locking members, having a slotted portion which consists of the jaws 9, and an engageable portion which is curved and warped both transversely and longitudinally. The engageable member is arched longitudinally in the manner of the fastener disclosed in a copending application but the feature is added of warplng the member transversely, thereby greatly increasing its binding properties. found that Where a considerable number of engageable members are joined together a very slight curvature is sufficient to give a Since it has been n very rm lock, the design of this type of engageable member may be comparatively simple. Because of the warp or doubl curved characteristic of this type of engagea 4le nem- 3, 4 and 5 of the drawin s. In Fig. 3 which 1s a transverse section o a serles of engage- .able portions of the elements it is shown that longitudinal sectionof .a series of the elements shows that the engageablef portions have a curvature which is convex'downwardly in the plane of the section. Fig. 5 is a perspective View of the element and the shading on this view clearly shows the double curvature nav ture of the upper surface of the engageable portion of the element. The lower surface of the engageable portion in the particular embodiment disclosed herein has the same geometrical form as the upper surface.

Having thus described my invention what -I claim as new and useful and desire to protect by Letters Patent is:

1. In a fastener, a number of engageable members adapted to interlock, each of the engageable surfaces of each member being cur-ved both concavely and convexly.

2. In a fastener, a number of engageable members adapted to interlock,each of the engageable surfaces of each member being curved both concavely and convexly, the engageable portion of each member being of uniform thickness. 3. In a fastener, a number of engageable members adapted to interlock, each of the engageable surfaces of each member being curved both concavely and convexly, the engageable surfaces being continuous and eX- tending to the edges of the member.

4. In a fastener, a number of engageable members adapted to interlock, each of the engageable surfaces of each member being curved both concavely and convexly, the engageable surfaces of each member being of like eometrical form.

5. n a fastener, a number of engageable members adapted to interlock, each of the engageable surfaces ofeach 'member being curved both concavely and conveXly, the mem'- bers being interchangeable.

Signed at New York, county of New York,

State of New York, this 13th day of July,

WALTER L. rrPEs. 

